| 巯基纤维素处理重金属废水研究 |
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| 引用本文： | 施文健,彭孟成.巯基纤维素处理重金属废水研究[J].林产化学与工业,2004,24(2):65-68. |
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| 作者姓名： | 施文健 彭孟成 |
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| 作者单位： | 上海理工大学,城建学院,上海,200093 |
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| 摘 要： | 纤维素与硫代乙醇酸在乙酸酐和乙酸介质中发生酯化反应，合成巯基纤维素(SC)。含重金属的废水中加入碱调节废水pH值至9～10，静置、过滤。滤液用酸调pH值至5～7后流经SC管，去除废水中镉、铅、铜、汞等重金属。SC用稀盐酸淋洗再生。对使用和再生条件及吸附机理进行了研究。实验结果：SC中巯基含量大于2％时，每公斤SC对金属离子的吸附容量大于0．2mol；处理水中镉、铅、铜、汞浓度低于0．05mg／L；SC再生后可循环使用。
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| 关 键 词： | 巯基纤维素 重金属 废水处理 |
| 文章编号： | 0253-2417(2004)02-0065-04 |
TREATMENT OF HEAVY-METAL WASTE WATER WITH SULFOHYDRYL CELLULOSE |
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| SHI Wen-jian,PENG Meng-cheng.TREATMENT OF HEAVY-METAL WASTE WATER WITH SULFOHYDRYL CELLULOSE[J].Chemistry & Industry of Forest Products,2004,24(2):65-68. |
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| Authors: | SHI Wen-jian PENG Meng-cheng |
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| Abstract: | Sulfohydryl cellulose(SC) was synthesized by reacting cellulose with sulfohydryl acetic acid in the medium of acetic anhydride and acetic acid.Alkali was added into heavy-metal waste water to adjust pH value 9-10,followed by sedimentation and filtration.Then the filtrate was adjusted to pH value 5-7 and flowed through SC tube to remove Cd(II),Pb(II),Cu(II),Hg(II) in the waste water.SC tube was regenerated by dilute hydrochloric acid.Conditions of treatment and regeneration,along with adsorption mechanism were studied.Saturated adsorptive capacity of SC was more than 0.2 mol/kg SC when sulfohydryl content in SC was more than 2%.The concentrations of metal ions Cd(II),Pb(II),Cu(II),Hg(II) in the filtrate were all below 0.05 mg/L.The regenerated SC can be reused. |
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| Keywords: | sulfohydryl cellulose heavy metal waste water treatment |
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